Usually updated Linux Mint translations are included with a next Linux Mint release. With Linux Mint 17 already under development and approaching (May/June) you are at least well in time to have the translations included with that. That's the next long-term support release, which many users will be using for a long time so 100% translated for that is awesome!

Hi,I worked on Linux Mint translation. We are going to translate the next version too, but now we would like to get an update for the current packages. We have few issues in the current translation and I pushed the fixes to the Launchpad. Is it possible to get an language update for Petra/Cinnamon?